‘Jews’ is a nickname. In Esther Chapter 2 for example, Mordecai the ‘Jew’ is a Benjaminite. Judah (Judea) was the name of the southern kingdom, known to include remnants of other tribes, as well as more than its share of the tribe of Levi, which included Kohanim.
Technically, the proper term is B’nai Yisrael or B’nai Ya’akov.
I like technicalities. I think it is offensive for definitions to be thrown around, when they are the ones who chose the name of Israel instead of Judah.I have seen not real efforts to find and identify other members of the sons of Jacobs descendants. It is always about the Jews.